A list of two choices that follows in a sequence for identification is a:

A: dichotomous key

B: Classification schema.

Why is it important that your heart rate returns to resting levels as quickly as possible?

When the effects of both alleles are shown, there is said to be: ?

Shivering to warm up illuminates illuminates which charistic of life

For a particular plant, leaf texture is either fuzzy or smooth. A purebred fuzzy plant is crossed with a purebred smooth plant. All offspring are fuzzy. Which sentence best describes the alleles for this trait? A. Fuzzy is dominant over smooth B.

Which statement about the size of the atom is true? a The size of an atom is smaller than the size of a sand particle on a beach. b The size of an atom is equal to the time in seconds since the formation of Earth.

What is the main function of the large intestine? A. digestion of proteins B. absorption of nutrients C. breaking down complex carbohydrates D. removing water from undigested waste

Which type of environmental scientist is most likely to study how whales are affected by pollution? a. Hydrologist b. Toxicologist c. Ecologist d. Oceanographer

How did Francesco Redi disprove the idea of spontaneous generation? He showed that flies were not produced by meat. He showed that microorganisms are present in air. He showed that microorganisms cause disease. He showed that flies spread disease.

Of the millions of sperm who start the long journey to the egg, how many sperm are actually allowed to enter the egg?

A mineral leaves a gray trail when scraped against an unglazed porcelain plate. Which property of a mineral is being measured? A. luster B. streak C. color D. hardness